Gaya APA
Economics: Principles, Problems, and Policies. (2015).
Singapore:
Mc Graw-Hill Education.
Gaya Chicago
Economics: Principles, Problems, and Policies.
.
Singapore:
Mc Graw-Hill Education,
2015.
Buku.
Gaya MLA
Economics: Principles, Problems, and Policies.
.
Singapore:
Mc Graw-Hill Education,
2015.
Buku.
Gaya Turabian
Economics: Principles, Problems, and Policies.
Singapore:
Mc Graw-Hill Education,
2015.
Buku.